Really Cool

An advanced client side Block, Entity, Component, NBT, Tool and ID picker

Leaf decay ignores different types of leaves and logs. Also fast leaf decay. Configurable.

Datapack that lets you create and place custom paintings in-game

Yet another camera mod to take photos of your world!

This mod allows you to drag items into the saved hotbars tab and remove them by middle clicking!

A updated and improved fork of KeybindsGalore (originally by Cael and updated to 1.20 by HVB007), with fixes for some limitations of the originals.

Scale your Chat, Player List (TAB), Scoreboard (Sidebar), Inventories (including chests) and your hotbar, to any fractional value!

Allows dispensers to place blocks in front of them in vanilla using a data pack.

Adds minecarts with dispensers and minecarts with droppers, to enhance your contraptions in a vanilla fashion.

A mod that fixes the bundle UI in 1.21.2+

Helps you hit your Arrows: Simulates the Trajectory of a Projectile and draws a line along this path.

An in-game texture editor for tools and canvases.